Building haikuos adding devel packages like gcc + git

you can ad your custom build config the devel packages in cases you want to compile inside the image

create the file

build/jam/UserBuildConfig

the devel packages (jam seems to be very sensitive to space and ";" at the end )

AddOptionalHaikuImagePackages Development ;
AddOptionalHaikuImagePackages Git ;
AddOptionalHaikuImagePackages DevelopmentBase ;
AddOptionalHaikuImagePackages DevelopmentMin ;

a good idea if you build the anyboot image is to increase the image size from 100 default to 400

HAIKU_IMAGE_SIZE        = 400 ;

then you can build the image with the simple

jam -q

Next is howto figure it out how to make it install on /dev/sda from the jam file (auto install on partition) it said it installed but it couldn't boot yet